#include<iostream>
#include<list>
using namespace std;

int main()
{
	list<char> coll;   //list container for character elements
	
	//append elements from 'a' to 'z'
	for(char c='a';c<='z';c++){
		coll.push_back(c);
	}

	//print all the elements
	list<char>::const_iterator pos;
	for(pos=coll.begin();pos!=coll.end();pos++){
		cout<<*pos<<" ";
	}
	cout<<endl;

	return 0;
}